Saying Yugioh is better than GX is like saying Elephant shit is better than human shit. It is all still shit.
It is also like saying cancer is way cooler than Ebola. Actually, Ebola is cooler than cancer, you can't vomit up your stomach lining when you have cancer. Elephant shit is also way cooler than human shit, what with being bigger, and it could probably be used to start fires if you are lost in the African wastes...look I'm missing my point here, both these animes blow, and no amount of Yugi showing up, or motorbikes can save that.